1N4148 Diode – 100V, 0.2A, Rectifier – Diotec

What is 1N4148?

This diode has a maximum forward current rating of 200mA and a maximum reverse voltage rating of 100V. It is housed in a DO-35 package and has a cathode band marked on one end to indicate the polarity.

Function: 100V, 500mW, Diode, Rectifier

Package: Axial Type

Manufacturer: Diotec Semiconductor Germany

Image and Pinouts:
1N4148 datasheet


1N4148 is a commonly used small signal diode that is used for high-frequency rectification, signal clipping, and protection of sensitive electronic components.

This is 100V, 500mW, Small Signal Diode, Rectifier.

The 1N4148 diode has a fast switching speed and low forward voltage drop, making it suitable for use in high-speed switching and rectification circuits. It is commonly used in signal processing circuits, such as mixers, amplifiers, and detectors, as well as in power supplies and voltage regulators.


1. Max. power dissipation : 500 mW

2. Repetitive peak reverse voltage : 100 V

3. Glass case : DO-35, SOD-27

4. Weight approx. : 0.13 g

5. Equivalent SMD-version :  LL4151, LL4148

1N4148 Datasheet PDF Download

1N4148 pdf

Other data sheets are available within the file: IN4148, 1N4150, 1N4151, 1N4448

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